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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GPU_CanvasContext_H_
#define GPU_CanvasContext_H_
#include "nsICanvasRenderingContextInternal.h"
#include "nsWrapperCache.h"
#include "ObjectModel.h"
#include "mozilla/layers/LayersTypes.h"
#include "mozilla/webrender/WebRenderAPI.h"
namespace mozilla {
namespace dom {
class OwningHTMLCanvasElementOrOffscreenCanvas;
class Promise;
struct GPUCanvasConfiguration;
enum class GPUTextureFormat : uint8_t;
} // namespace dom
namespace webgpu {
class Adapter;
class Texture;
class CanvasContext final : public nsICanvasRenderingContextInternal,
public nsWrapperCache {
private:
virtual ~CanvasContext();
void Cleanup();
public:
// nsISupports interface + CC
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(CanvasContext)
CanvasContext();
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
public: // nsICanvasRenderingContextInternal
int32_t GetWidth() override { return mCanvasSize.width; }
int32_t GetHeight() override { return mCanvasSize.height; }
NS_IMETHOD SetDimensions(int32_t aWidth, int32_t aHeight) override;
NS_IMETHOD InitializeWithDrawTarget(
nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override {
return NS_OK;
}
bool UpdateWebRenderCanvasData(mozilla::nsDisplayListBuilder* aBuilder,
WebRenderCanvasData* aCanvasData) override;
bool InitializeCanvasRenderer(nsDisplayListBuilder* aBuilder,
layers::CanvasRenderer* aRenderer) override;
mozilla::UniquePtr<uint8_t[]> GetImageBuffer(
int32_t* out_format, gfx::IntSize* out_imageSize) override;
NS_IMETHOD GetInputStream(const char* aMimeType,
const nsAString& aEncoderOptions,
nsIInputStream** aStream) override;
already_AddRefed<mozilla::gfx::SourceSurface> GetSurfaceSnapshot(
gfxAlphaType* aOutAlphaType) override;
void SetOpaqueValueFromOpaqueAttr(bool aOpaqueAttrValue) override {}
bool GetIsOpaque() override { return true; }
void ResetBitmap() override { Unconfigure(); }
void MarkContextClean() override {}
NS_IMETHOD Redraw(const gfxRect& aDirty) override { return NS_OK; }
void DidRefresh() override {}
void MarkContextCleanForFrameCapture() override {}
Watchable<FrameCaptureState>* GetFrameCaptureState() override {
return nullptr;
}
public:
void GetCanvas(dom::OwningHTMLCanvasElementOrOffscreenCanvas&) const;
void Configure(const dom::GPUCanvasConfiguration& aDesc);
void Unconfigure();
RefPtr<Texture> GetCurrentTexture(ErrorResult& aRv);
void MaybeQueueSwapChainPresent();
void SwapChainPresent();
void ForceNewFrame();
private:
gfx::IntSize mCanvasSize;
std::unique_ptr<dom::GPUCanvasConfiguration> mConfig;
bool mPendingSwapChainPresent = false;
RefPtr<WebGPUChild> mBridge;
RefPtr<Texture> mTexture;
gfx::SurfaceFormat mGfxFormat = gfx::SurfaceFormat::R8G8B8A8;
Maybe<layers::RemoteTextureId> mLastRemoteTextureId;
Maybe<layers::RemoteTextureOwnerId> mRemoteTextureOwnerId;
};
} // namespace webgpu
} // namespace mozilla
#endif // GPU_CanvasContext_H_
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